连体连接方式对高层连体结构地震响应的影响
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摘要
针对一非对称双塔连体结构,变换连接体与主体结构的连接方式,并建立了动力分析模型和三种连接工况下连体结构的振动方程,分析了结构动力特性随连接方式的变化规律,分析结果表明:自振周期随连接的减弱及振型的增加而逐渐变大。对该结构体系沿连体设置方向输入El Centro1940地震波,采用动力时程分析方法分析连体结构的抗震性能,研究结果表明:连体结构中采用合理的模型并引入耗能装置可以大大减小结构在地震作用下的动力响应,提高连体结构的抗震性能。
Aimed to a unsymmetrical connected double-tower structure,the connected style of the main structure and the connection was transformed,the corresponding dynamic analysis model and the twin towers connected structure vibration equation with three linking conditions were constructed,and the change laws of dynamic performance were analyzed while the connection style was changed.The results indicated that,natural vibration period become gradually bigger as the vibration mode gradually increased and the connection weakened.Along the connected-building direction,the El Centro1940 seismic wave was put in the structure,and dynamic analysis method was used to analyze the structural seismic behavior.The research results showed that the reasonable piece of the model and the energy-consuming devices could greatly reduce the dynamic response under the earthquake,and improve the seismic performance of the unsymmetrical connected double-tower structure.
Aimed to a unsymmetrical connected double-tower structure,the connected style of the main structure and the connection was transformed,the corresponding dynamic analysis model and the twin towers connected structure vibration equation with three linking conditions were constructed,and the change laws of dynamic performance were analyzed while the connection style was changed.The results indicated that,natural vibration period become gradually bigger as the vibration mode gradually increased and the connection weakened.Along the connected-building direction,the El Centro1940 seismic wave was put in the structure,and dynamic analysis method was used to analyze the structural seismic behavior.The research results showed that the reasonable piece of the model and the energy-consuming devices could greatly reduce the dynamic response under the earthquake,and improve the seismic performance of the unsymmetrical connected double-tower structure.
引文
[1]黄坤耀,孙柄楠,楼文娟.连体刚度对双塔连体高层建筑地震相应的影响[J].建筑结构学报,2001,22(3):21-26.
[2]刘晶波,李征宇,石萌,等.大跨高层连接体建筑结构动力分析[J].建筑结构学报,2004,25(1):45-52.
[3]陈文兵,唐家祥.水平任意向地震输入下双塔楼连体结构的动力分析[J].振动与冲击,2003,22(1):29-32.
[4]黄坤耀,孙炳楠,楼文娟,等.非对称双塔连体结构动力特性和地震相应分析[J].工业建筑,2001,31(8):20-24.
[5]BHASKARARAO A V,JANGID R S.Seismic analysis of structuresconnected with friction dampers[J].Engineering Structures,2006,28(5):690-703.
[6]XU Y L,HE Q,KO J M.Dynamic response of damper-connectedadjacent buildings under earthquake excitation[J].EngineeringStructures,1999,21(2):135-148.
[7]JINKOO KIMA,JINGOOK RYUA,LAN CHUNG.Seismic performanceof structures connected by viscoelastic dampers[J].EngineeringStructures,2006,28(2):183-195.
[8]王灵,吕西林.双塔楼弱连接连体高层建筑结构抗震性能研究[J].四川建筑科学研究,1999(3):48-51.
[9]卞朝东,李爱群,娄宇,等.高层连体结构振型及其参与系数的分析[J].建筑科学,2002,18(4):20-24.
[2]刘晶波,李征宇,石萌,等.大跨高层连接体建筑结构动力分析[J].建筑结构学报,2004,25(1):45-52.
[3]陈文兵,唐家祥.水平任意向地震输入下双塔楼连体结构的动力分析[J].振动与冲击,2003,22(1):29-32.
[4]黄坤耀,孙炳楠,楼文娟,等.非对称双塔连体结构动力特性和地震相应分析[J].工业建筑,2001,31(8):20-24.
[5]BHASKARARAO A V,JANGID R S.Seismic analysis of structuresconnected with friction dampers[J].Engineering Structures,2006,28(5):690-703.
[6]XU Y L,HE Q,KO J M.Dynamic response of damper-connectedadjacent buildings under earthquake excitation[J].EngineeringStructures,1999,21(2):135-148.
[7]JINKOO KIMA,JINGOOK RYUA,LAN CHUNG.Seismic performanceof structures connected by viscoelastic dampers[J].EngineeringStructures,2006,28(2):183-195.
[8]王灵,吕西林.双塔楼弱连接连体高层建筑结构抗震性能研究[J].四川建筑科学研究,1999(3):48-51.
[9]卞朝东,李爱群,娄宇,等.高层连体结构振型及其参与系数的分析[J].建筑科学,2002,18(4):20-24.
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